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[AARCH64][5/5] Add macro fusion support for cmp/b.X for ThunderX

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* config/aarch64/aarch64.c (AARCH64_FUSE_CMP_BRANCH): New define.
	(thunderx_tunings): Add AARCH64_FUSE_CMP_BRANCH to fuseable_ops.
	(aarch_macro_fusion_pair_p): Handle AARCH64_FUSE_CMP_BRANCH.

From-SVN: r218525
This commit is contained in:
Andrew Pinski 2014-12-09 17:32:58 +00:00 committed by Kyrylo Tkachov
parent 3b21bfb10e
commit 3759108f07
2 changed files with 23 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2014-12-09 Andrew Pinski apinski@cavium.com
Kyrylo Tkachov kyrylo.tkachov@arm.com
* config/aarch64/aarch64.c (AARCH64_FUSE_CMP_BRANCH): New define.
(thunderx_tunings): Add AARCH64_FUSE_CMP_BRANCH to fuseable_ops.
(aarch_macro_fusion_pair_p): Handle AARCH64_FUSE_CMP_BRANCH.
2014-12-09 David Malcolm <dmalcolm@redhat.com>
PR jit/64166

17
gcc/config/aarch64/aarch64.c
View File

@ -310,6 +310,7 @@ static const struct cpu_vector_cost cortexa57_vector_cost =
#define AARCH64_FUSE_ADRP_ADD (1 << 1)
#define AARCH64_FUSE_MOVK_MOVK (1 << 2)
#define AARCH64_FUSE_ADRP_LDR (1 << 3)
#define AARCH64_FUSE_CMP_BRANCH (1 << 4)
#if HAVE_DESIGNATED_INITIALIZERS && GCC_VERSION >= 2007
__extension__
@ -356,7 +357,7 @@ static const struct tune_params thunderx_tunings =
&generic_vector_cost,
NAMED_PARAM (memmov_cost, 6),
NAMED_PARAM (issue_rate, 2),
NAMED_PARAM (fuseable_ops, AARCH64_FUSE_NOTHING)
NAMED_PARAM (fuseable_ops, AARCH64_FUSE_CMP_BRANCH)
};
/* A processor implementing AArch64. */
@ -10379,6 +10380,20 @@ aarch_macro_fusion_pair_p (rtx_insn *prev, rtx_insn *curr)
}
}
if ((aarch64_tune_params->fuseable_ops & AARCH64_FUSE_CMP_BRANCH)
&& any_condjump_p (curr))
{
enum attr_type prev_type = get_attr_type (prev);
/* FIXME: this misses some which is considered simple arthematic
instructions for ThunderX. Simple shifts are missed here. */
if (prev_type == TYPE_ALUS_SREG
|| prev_type == TYPE_ALUS_IMM
|| prev_type == TYPE_LOGICS_REG
|| prev_type == TYPE_LOGICS_IMM)
return true;
}
return false;
}